Onan Marquis 7000 Leaking Oil When Running

[base1957]

Leaks when runs does not seem to leak otherwise. Is not around dip stick or drain plug. Iv researched a little and seems it could be crankcase breather, seals etc.... Wasn't overfilled so I'm hoping its the crankcase breather. Leak is significant.

If its breather valve do I have to drop generator?

[TEXAS]

Thanks forgot about that one. That plug is where the gov shaft goes through. On engines with the normal gov. With electronic gov. Shaft is not needed. So they plugged it. Should have used some sealer with the plug.

[Takereasy]

My 7500 started leaking oil and smoking while running. I found a welch plug that came out of a hole next to the governor housing and it was blowing oil out and letting it run down the center of the engine. I found the plug and reinstalled it with some sealer. Easy fix once I pulled the covers and found the problem.

[Kpackpackkelley]

I sent you a pm John.

[base1957]

Looks like Ill have to remove the generator. Also, my breather does not have the pre air heater hose on it. Would that cause any problems. Seems its never been there that I can remember.

[Kpackpackkelley]

Look on this thread I posted the manual on it.
http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/27108749.cfm
If you need it pdf pm me with your email.

[base1957]

Model # 7NHMFA26105F

Ser # C963508455

[TEXAS]

I most likely you will. Breather is part of the left valve cover.

[Kpackpackkelley]

Give me the model and spec and I'll post you a service manual. It will tell you what to do.